Transcript BTV screens

BTV screens
All details in EDMS Functional Spec
LHC-BTVD-ES-0001-00-10
Input from Claude, Thibault, Joerg,
Miguel, Marcel, Gerard
Screen locations (provisional)
IP6
Q B Q B
Q5
Ring 1
Dump
TDE
Q4
Q4
BTVSE
BTVD
Diluter Kicker
TCDQ MKB
BTVDD
750m
300
200
Septum
MSD
Diluter
TCDS
Kicker
MKD
100
BTVDD
BTVD
Kicker
MKD
Diluter
TCDS
0
Dump
TDE
B Q B Q
Kicker Diluter
MKB TCDQ
BTVSE
Septum
MSD
Q5
100
Ring 2
200
•
BTVSE – 0.55 m upstream of the TCDS entrance;
•
BTVD – 25.835 m downstream of the MKBV exit;
•
BTVDD – 30 m upstream of the TDE block entrance.
300
750m
Function
• BTVSE
– Setting up extraction (MKD kick, orbit) at different
energies
• BTVD
– Setting up extraction (MKD kick, MSD kick, orbit)
• BTVDD
– Setting up extraction (MKD kick, MSD kick, MKB kick,
orbit)
– Monitoring of dump trace (MKB kick)
Performance
Screen
Precision [mm]
Reproducibility [mm]
5x109
1.15x1011 5x109
1.15x1011
Resolution [pixels]
BTVSE
0.1
0.1
0.2
0.2
400 x 300
BTVD
0.2
0.2
0.2
0.2
400 x 300
BTVDD
1.3
1.3
0.5
0.5
400 x 300
Screen
x [m]
y [m]
BTVSE
140
260
1.0
0.3
1.4
0.4
BTVD
490
157
2.0
0.5
1.1
0.3
4500
4274
5.9
1.5
5.8
1.5
BTVDD
 x [mm]
 y [mm]
450 GeV
7 TeV 450 GeV
7 TeV
Beam loading
Nominal cases
Screen
Nominal sweep [p+/mm2]
450 GeV
7 TeV
pilot bunch [p+/mm2]
450 GeV
7 TeV
nominal bunch [p+/mm2]
450 GeV
7 TeV
BTVSE
2.7 x 1013
1.9 x 1014
5.3 x 108
8.3 x 109
1.2 x 1010
1.9 x 1011
BTVD
2.0 x 1012
1.0 x 1013
3.7 x 108
5.7 x 109
8.4 x 109
1.3 x 1011
BTVDD
2.7 x 1010
1.2 x 1011
2.3 x 107
3.6 x 108
5.3 x 108
8.3 x 109
Dilution failure cases
Screen
No MKBH [p+/mm2]
450 GeV
7 TeV
No MKBV [p+/mm2]
450 GeV
7 TeV
No MKB [p+/mm2]
450 GeV
7 TeV
BTVD
6.4 x 1012
3.2 x 1013
9.8 x 1012
4.9 x 1013
2.4 x 1013
1.3 x 1014
BTVDD
2.3 x 1011
1.0 x 1012
3.0 x 1011
1.3 x 1012
1.8 x 1012
9.0 x 1012
Constraints
• Cameras limited to 400x300 pixels (for
compatibility)
– Affects resolution
• BTVSE – 2.2 (2.4) pixels per 
• BTVD – 1.2 (2.5) pixels per 
• BTVDD – 0.8 (1.1) pixels per 
Screen sizes - BTVSE
60
50
40
30
20
10
50 x 40 mm
0
-80
-70
-60
-50
-40
-30
-20
-10
0
-10
-20
-30
-40
-50
-60
10
20
30
40
Screen sizes - BTVD
70
60
Cut by chamber
50
40
30
20
100 x 60 mm
10
0
-70
-60
-50
-40
-30
-20
-10
0
-10
-20
-30
-40
-50
-60
-70
10
20
30
40
50
60
70
Screen sizes - BTVDD
350
300
250
200
150
100
50
550 x 550 mm
0
-350
-300
-250
-200
-150
-100
-50
0
-50
-100
-150
-200
-250
-300
-350
50
100
150
200
250
300
350
Diagnosing MKB failures- BTVDD
350
350
300
300
250
250
200
200
150
150
100
100
50
50
0
-350
-300
-250
-200
-150
-100
-50
0
0
50
100
150
200
250
300
350
-350
-300
-250
-200
-150
-100
-50
-50
-50
-100
-100
-150
-150
-200
-200
-250
-250
-300
-300
-350
-350
350
350
300
300
250
250
200
200
150
150
100
100
50
50
0
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
200
250
300
350
0
50
100
150
200
250
300
350
0
0
50
100
150
200
250
300
350
-350
-300
-250
-200
-150
-100
-50
-50
-50
-100
-100
-150
-150
-200
-200
-250
-250
-300
-300
-350
-350